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Author

O. M. Mastromichalakis

3 papers indexed here

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#natural language process... Preprint Sep 2026

An Empirical Study of Counterfactual Self-Explanations in LLMs

This work evaluates ten instruction-tuned models from the LLaMA-3 and Qwen-2.5 families, measuring faithfulness, minimality, and alignment with human-annotated rationales and shows that model scale is the strongest determinant of explanation quality.

Giannis Kalyvas, Giorgos Filandrianos, Orfeas Menis-Mastromichalakis et al. · 0 citations
#artificial intelligence Preprint Sep 2026

AURA-Eval: Evaluation Framework for Acting Under Risk Awareness in LLM Agent Trajectories

AURA-Eval, a framework combining controlled augmentation with granular diagnosis of behavior in tool-use trajectories, is introduced, showing that LLM agents engage in unsafe behavior more often when no safe fulfillment path exists.

Ruoxi Shang, Christina-Maria Androna, Orfeas Menis-Mastromichalakis et al. · 0 citations

Last Translation Benchmark

The Last Translation Benchmark is introduced, a collection of human-authored and peer-reviewed examples that break leading machine translation models and a new evaluation approach: each example comes with handcrafted verification rules describing concrete failure cases on that example, therefore allowing reliable and a...

Vilém Zouhar, Niyati Bafna, Mukund Choudhary et al. · 0 citations

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